Home / 65,617.20-98,425.80-40,685.40

Finding the Fourth Proportional to 65,617.20, 98,425.80 and 40,685.40

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Solution

The fourth proportional to 65,617.20, 98,425.80 and 40,685.40 is: 61,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,617.20 : 98,425.80 = 40,685.40 : x
  2. Step 2: Convert to fraction form
    65,617.20/98,425.80 = 40,685.40/x
  3. Step 3: Cross multiply
    65,617.20x = 98,425.80 × 40,685.40
  4. Step 4: Simplify right side
    65,617.20x = 4,004,493,043.32
  5. Step 5: Solve for x
    x = 4,004,493,043.32/65,617.20
  6. Step 6: Final answer
    x = 61,028.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.